SPONSORED LINKS

2003 Chevy Blazer Mis firing

Tiny
DTSHANES
  • MEMBER
  • 2003 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 94,000 MILES
I just had my 2003 Blazer tuned up and the service engine light is back on and it is still missing at different speeds, kinda chugging and then it stops, it has been doing this for about a month! I am thinking its something not so complicated, fuel filter o2 sensor? Any words of wisdom?
SPONSORED LINKS
Monday, January 11th, 2010 AT 8:32 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Engine misfiring can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure, or even bad fuel.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Monday, January 11th, 2010 AT 9:30 AM

Please login or register to post a reply.

Related Engine Misfire Content

Intermittent Misfire
VIDEO
Intermittent Misfire
Instructional repair video
Misfire Random Code P0300
GUIDE
Misfire Random Code P0300
The world of automotive diagnostics can be complex, with numerous codes and potential issues to keep track of. One of the more common engine diagnostic codes is P0300, which...
VIEW MORE

Sponsored links